MTV “Teen Mom” star Catelynn Lowell, who gave up her daughter Carly for adoption at age 16, is pregnant again now at age 20.

Lowell’s friend Jamie Pyrzewski spilled the beans to In Touch magazine, saying, “She said, ‘You’re never going to believe it: I’m pregnant.”

Catelynn’s shock later turned into feeling excited about the pregnancy.

A family friend of Catelynn’s said, “This time around, she and Tyler knew immediately they wanted to keep the baby. She’s just so happy.”

Catelynn and her stepbrother-fiance Tyler made quite an impression on the reality show when they made the selfless decision to give Carly up for adoption.